Presented to
the Faculty of the School of Engineering and Applied Science
at the
University of Virginia
In Partial Fullfillment
of the Requirements for the Degree
Doctor of Philosophy (Computer Science)
by
Ken Hinckley
December 1996
kph2q@virginia.edu
Randy Pausch (Dissertation Advisor)Worthy Martin (Committee Chair)
Dennis Proffitt (Minor Representative)
Andrew S. Grimshaw
John C. Knight
John W. Snell